Research and Design of Image Acquisition System Using USB2.0 Interface

2013 ◽  
Vol 347-350 ◽  
pp. 1594-1597
Author(s):  
Jin Hai Zhang
Keyword(s):  
Image Processing ◽  
High Speed ◽  
Image Acquisition ◽  
Image Data ◽  
Acquisition System ◽  
Computer Interface ◽  
Processing Technologies ◽  
Acquisition Device ◽  
Image Acquisition System ◽  
Research And Design

Image acquisition is to study an image acquisition, transmission and storage of information, is the basis of image processing technologies. Currently most of the image acquisition device through the computer interface in the image data into the computer, with high speed and large storage capacity of the computer complete the image acquisition. Traditional computer interface in image processing of data if there is a problem such as high cost, inconvenience, in response to this situation, this paper proposes a USB2.0 interface technology of image acquisition system programme.

The Design of High-Speed CMOS Imaging System Based on SOPC Technology

2010 ◽  
Vol 39 ◽  
pp. 523-528
Author(s):  
Xin Hua Yang ◽  
Yuan Yuan Shang ◽  
Da Wei Xu ◽  
Hui Zhuo Niu
Keyword(s):  
High Speed ◽  
Imaging System ◽  
Image Acquisition ◽  
Image Data ◽  
Image Sensor ◽  
Acquisition System ◽  
Storage Unit ◽  
Data Encoding ◽  
Acquisition Speed ◽  
Image Acquisition System

This paper introduces a design of a high-speed image acquisition system based on Avalon bus which is supported with SOPC technology. Some peripherals embedded in Avalon bus were customized and utilized in this system, such as imaging unit, decoding unit and storage unit, and these improved the speed of the whole imaging system. The data is compressed to three-fourths of the original by the decoding unit. A custom DMA is designed for moving the image data to the two caches of the SDRAM. This approach discards the method that FIFO must be put up in the traditional data acquisition system. And therefore, it reduced the CPU’s task for data moving. At the same time, the image acquisition and the data transmission can complete a parallel job. Finally, the design is worked on the high-speed image acquisition system which is made up of 2K*2K CMOS image sensor. And it improved the image acquisition speed by three ways: data encoding, custom DMA controller and the parallel processing.

The Design of Image Acquisition System Based on Contex-M3

2013 ◽  
Vol 278-280 ◽  
pp. 1148-1152
Author(s):  
Fan Zhang ◽  
Jian Dong Mao ◽  
Zhi Min Rao ◽  
Ya Ya Zhang
Keyword(s):  
High Speed ◽  
Low Cost ◽  
Image Acquisition ◽  
Reference Value ◽  
Image Data ◽  
Image Sensors ◽  
Acquisition System ◽  
Similar System ◽  
Image Acquisition System ◽  
Sd Card

A CMOS image acquisition system based on Contex-M3 is developed. In design STM32F103X is selected as the main controller, OV7670 is used for image sensors. In order to capture high-speed digital image, the FIFO buffer chip AL422B and SD Card under the control of the DMA are employed to directly transfer data. Moreover the SD card and 2.8 inch TFT LCD are selected to storage and display image data, respectively. Because of small size, low power, simple structure and low cost, the image acquisition system can provide an important reference value for development of similar system.

Design and Implementation of High Speed Image Data Protocol Conversion System

2013 ◽  
Vol 333-335 ◽  
pp. 980-983
Author(s):  
Yan Fei Liu ◽  
Qi Li ◽  
Jian Feng Xu ◽  
Suo Li Guo
Keyword(s):  
High Speed ◽  
Low Voltage ◽  
Image Acquisition ◽  
Image Data ◽  
Acquisition System ◽  
Good Ability ◽  
Protocol Conversion ◽  
Differential Signaling ◽  
Ping Pong ◽  
Image Acquisition System

This paper presented a high-speed image acquisition system based on PXI bus and Low Voltage Differential Signaling (LVDS) technology, with the characteristics of mass data, high-speed of data acquisition in the field of modem technology and scientific research. It expatiated the whole frame, and emphasized the design and implement of the system. It simulated the Ping-Pong operation of image data transmission, and tested the performance of the system. The results of test indicate that the high-speed image acquisition system has good ability of acquisition and transmission, and it can satisfy the engineering applied demand.

Design of a High-Speed Image Data Real-Time Storage and Display Circuit

2014 ◽  
Vol 912-914 ◽  
pp. 1222-1227 ◽  
Author(s):  
Cheng Qun Chu ◽  
Yong Feng Ren ◽  
Fang Ma
Keyword(s):  
Real Time ◽  
High Speed ◽  
Image Acquisition ◽  
Image Data ◽  
Data Access ◽  
Acquisition System ◽  
Nand Flash ◽  
Large Capacity ◽  
Storage Rate ◽  
Internal Block

The needs of large-capacity storage in high-speed image acquisition systems require the design of reliable and efficient storage instruments. The paper presents a FPGA-based high-speed storage instrument for high speed Camera Link image acquisition system. The FPGA processes the input data and stores the results into the storage array. Multi-chip large-capacity SLC NAND Flash chips constitute a storage array, with up to 100MByte/s storage rate, is used for the digitization image signals. A multilevel high-speed buffer structure based on abundant internal block RAM resources in FPGA is used for speeding up data access. At the same time, it can take advantage of FPGA constructing the corresponding VGA timing signals to control the video conversion chip ADV7123 to realize the function of real-time display. After a description of the proposed hardware and solutions, an experimental was built to test the performance. The results have shown that the FPGA-based acquisition system is a compact and flexible solution for high-speed image acquisition applications.

Image Acquisition System Design of Camera Based on FPGA

2014 ◽  
Vol 668-669 ◽  
pp. 836-839
Author(s):  
Jun Chao Zhu ◽  
Yong Chen Li ◽  
Ying Kui Jiao ◽  
Zhi Jun Ma
Keyword(s):  
High Speed ◽  
Image Acquisition ◽  
Image Sensor ◽  
Acquisition System ◽  
Ping Pong ◽  
Cmos Sensor ◽  
Image Acquisition System ◽  
High Speed Data ◽  
Fpga Chip ◽  
Image Collection

It designs an image acquisition system of the camera based on FPGA. It uses a CMOS image sensor as the sensitive chip and controls the timing of image collection by designing the FPGA. FPGA transfers captured image into a PC to display. It uses the I2C bus to initiate CMOS sensor. A problem of cross-clock is solved by asynchronous FIFO. By the ping-pong operation based on two SDRAM chips to solve the problem of high speed data cache. The FPGA chip communicates signal data with PC by Ethernet port. The experiment proved that the system is able to collect 2048×1536 resolution images in a speed of 12fps.

The Image Acquisition System Based on the ARM

2012 ◽  
Vol 548 ◽  
pp. 710-713
Author(s):  
Shu Ping Xu ◽  
Fei Chen
Keyword(s):  
Image Acquisition ◽  
Image Data ◽  
Cmos Image Sensor ◽  
Image Sensor ◽  
Acquisition System ◽  
System Use ◽  
Image Acquisition System ◽  
The Moment

The image acquisition and porcessing system is implemented by combining the embed technology and image technology.This image acquisition system use S3C44B0X which base on ARM for its core proeessing,make use of the CMOS image sensor to collect images,it stores the image data for the moment with FIFO, resolves the rate problem between ARM and the sensor.In the system,CPLD are taken advantage of. This set of equipment combines functions of image acquisting,image displaying and network transferring and has an excellent expansibility which easy to be developed secondly.

scholarly journals Wear and Breakage Detection of Integral Spiral End Milling Cutters Based on Machine Vision

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5690
Author(s):  
Wenming Wei ◽  
Jia Yin ◽  
Jun Zhang ◽  
Huijie Zhang ◽  
Zhuangzhuang Lu
Keyword(s):  
Image Processing ◽  
Machine Vision ◽  
End Milling ◽  
Image Acquisition ◽  
Acquisition System ◽  
Moving Frame ◽  
Light Sources ◽  
Complex Structures ◽  
Processing Methods ◽  
Image Acquisition System

Tool wear and breakage detection technologies are of vital importance for the development of automatic machining systems and improvement in machining quality and efficiency. The monitoring of integral spiral end milling cutters, however, has rarely been investigated due to their complex structures. In this paper, an image acquisition system and image processing methods are developed for the wear and breakage detection of milling cutters based on machine vision. The image acquisition system is composed of three light sources and two cameras mounted on a moving frame, which renders the system applicable in cutters of different dimensions and shapes. The images captured by the acquisition system are then preprocessed with denoising and contrast enhancing operations. The failure regions on the rake face, flank face and tool tip of the cutter are extracted with the Otsu thresholding method and the Markov Random Field image segmentation method afterwards. Eventually, the feasibility of the proposed image acquisition system and image processing methods is demonstrated through an experiment of titanium alloy machining. The proposed image acquisition system and image processing methods not only provide high quality detection of the integral spiral end milling cutter but can also be easily converted to detect other cutting systems with complex structures.

Visual inspection system for trackside communication and signal infrastructure

2020 ◽  
Vol 235 (1) ◽  
pp. 121-130
Author(s):  
Xinyu Du ◽  
Dan Wu
Keyword(s):  
High Speed ◽  
Visual Inspection ◽  
Image Acquisition ◽  
Acquisition System ◽  
Gaussian Kernel ◽  
Inspection System ◽  
Retinex Algorithm ◽  
Railway System ◽  
Image Acquisition System ◽  
Image Details

Trackside communication and signal infrastructure (TCSI) plays an important role in the safe operation of a high-speed railway system. However, it is a challenge to inspect such infrastructure using a vision-based system because of the uneven illumination and various reflection properties of the TCSI surfaces. This paper puts forward a visual inspection system installed on an inspection car for TCSI. The visual inspection system first captures the trackside images using the image acquisition system. Then, an image processing method using a varying-scale Retinex algorithm is implemented so that the visual inspection system can enhance the contrast of these trackside images. The method changes the size of the Gaussian kernel adaptively according to the image details in order to prevent halo artifacts and graying-out effects inherent in many image enhancement algorithms. By comparison with several state of the art methods, varying-scale Retinex is validated to overcome the local inhomogeneous brightness of images and make those images more suitable for browsing and analysis for inspectors. Composed of the image acquisition system and varying-scale Retinex, the visual inspection system is installed on many inspection cars in China for performing visual inspection.

High-speed image acquisition system and FPGA implementation

2010 ◽  
Vol 30 (11) ◽  
pp. 3094-3098 ◽  
Author(s):  
Zhen-qi HE ◽  
Guang-ming LI ◽  
Hui-lin ZHANG ◽  
Qi LI
Keyword(s):  
High Speed ◽  
Image Acquisition ◽  
Fpga Implementation ◽  
Acquisition System ◽  
Image Acquisition System
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